If you want to ask for help, where you really should try and put some effort into fixing your device yourself, at least give us some details as to what your device has installed and such. A description of the device / problem / what's been done to tackle the problem, etc.

successfully on the step 1 and 2..
but stuck on step 3, i have no access on my desktop last night. so i can't extract "libgstdsp.zip", and i reboot my device. and then it is stuck on nokia logo, and restarting..but i can boot on my nitdroid